1) Making money for the 'security companies' who install the machines
2) keeping the sheep scared and in line
3) Making money for the airport - all liquids (water, alcohol, perfume etc) must be bought at the airport and exorbitant prices
I post a quote below with link without comment - it really needs none. Those who can think rationally will draw their own conclusions. Those who fall into category#2 above will provide hilarious amusement for the rest of us in explaining it away.
Police fear many of the guns, which included Glock and Ruger 9mm pistols, were sold to criminal gangs in north-west England.
One drive-by shooting in Wythenshawe, Manchester, last October, in which a man was hit in the leg, allegedly involved a gun linked to Greenoe.
Documents posted in US courts reveal the suspected gun runner was stopped by security staff but talked his way on to a flight. He claimed to be an arms salesman returning from a gun show and that the broken-down weapons parts were harmless dummy samples.
Former Scotland Yard counter-terrorism chief Andy Hayman said details of the case are "genuinely shocking".
Writing in a national newspaper, he said: "This makes a mockery of the stringent checks we all endure at US airports, such as removing our shoes and belts, having our toothpaste confiscated and all the other irritants. Steven Greenoe's guns could just have easily been bombs."
Greenoe, who lived with his British wife Elizabeth in Frankwell, Shrewsbury, styled himself online as a "security and investigations" specialist. Investigators have linked him to 10 flights that flew to Manchester via Raleigh-Durham International Airport and Atlanta last year.